What Is Domain Propagation?
Domain propagation (or DNS propagation) is the time it takes for changes to your domain's DNS records to be updated and recognized across the entire global network of DNS servers. When you change your domain's A record, nameservers, or other DNS settings, these changes don't take effect instantly — they spread gradually across the internet.
Propagation typically takes anywhere from a few minutes to 48 hours, though most changes are visible within 1–4 hours. The speed depends on TTL (Time To Live) settings on your DNS records, which tell other servers how long to cache the old information before checking for updates.
During propagation, different users in different locations may see either the old or new settings, depending on which DNS server their request hits. This is why your website might work fine for you but not for a colleague in another city.
Why This Matters for Startups
Plan DNS changes well before critical launches. If you're launching your startup website on a new domain, make the DNS changes at least 24 hours in advance to ensure everything is working when you announce. Lowering your TTL to 300 seconds (5 minutes) a day before the change can speed up propagation. After the change, use tools like whatsmydns.net to check propagation status across different global locations.
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